CN113140037A - Lightweight and three-dimensional scene visualization system for building information model - Google Patents
Lightweight and three-dimensional scene visualization system for building information model Download PDFInfo
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- CN113140037A CN113140037A CN202110520274.3A CN202110520274A CN113140037A CN 113140037 A CN113140037 A CN 113140037A CN 202110520274 A CN202110520274 A CN 202110520274A CN 113140037 A CN113140037 A CN 113140037A
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Abstract
The invention discloses a light weight and three-dimensional scene visualization system of a building information model, belonging to the technical field of light weight of building models, comprising a model conversion module, a data screening module, a data equivalent conversion module and a three-dimensional display module, the model conversion module is responsible for converting the building information model into identifiable data, the data screening module comprises a data separation module, an equivalent model data selection module, a model data translation module and a model data rotation module, the data separation module is responsible for selecting geometric data of the model and eliminating other data, the invention selects the same model which appears repeatedly in the building information model, then only one model is reserved in all the same models, the remaining identical models leave only the position information, and the high lightweight of the building information model can be achieved by greatly reducing the identical models that repeatedly appear.
Description
Technical Field
The invention relates to the technical field of building model lightweight, in particular to a building information model lightweight and three-dimensional scene visualization system.
Background
The lightweight building information model refers to the process of simplifying, converting and reducing the model in the aspects of geometric entities, information bearing, logic construction and the like by using technical means such as model surface tiling, information cloud end, logic simplification and the like in the building information model. The weight reduction is mainly data compression, the original model files of the original modeling software are compared after the existing BIM building information model is processed by the weight reduction technology, the data volume of the modeling software after weight reduction is 1/4 of the original model files, and only barely reaches the qualified standard, but the excellent standard of 1/10 or even 1/20 is required to be reached, and higher technical cost is required.
The existing building information model is light-weighted, only data is compressed, the smaller the compressed data is, the higher the technical difficulty is, and the data volume of the building information model can be greatly reduced by simply summarizing and sorting the building information model, so that the aim of highly lightening the building information model is easily fulfilled.
Disclosure of Invention
The invention aims to provide a light-weight and three-dimensional scene visualization system for a building information model, which aims to solve the problem that the technical difficulty of high light weight of the existing building information model proposed in the background technology is high.
In order to achieve the purpose, the invention provides the following technical scheme: a building information model lightweight and three-dimensional scene visualization system comprises a model conversion module, a data screening module, a data equivalent conversion module and a three-dimensional display module, wherein the model conversion module is responsible for converting a building information model into identifiable data, the data screening module comprises a data separation module, an equivalent model data selection module, a model data translation module and a model data rotation module, the data separation module is responsible for selecting geometric data of the model and eliminating other data, the equivalent model data selection module is responsible for selecting the same model, the model data translation module is responsible for determining the geometric position of the moved same model, the model data rotation module is responsible for confirming the geometric position of the rotated same model, the data equivalent conversion module comprises a data induction module, a data compression module and a data restoration module, the data summarization module is responsible for eliminating repeated models in the same model and summarizing and sorting the residual models, the data compression module is responsible for compressing, storing and decompressing data of the residual models, the data restoration module restores the same model eliminated by the data summarization module through copying, translation and rotation, and the three-dimensional display module is responsible for performing three-dimensional visual display on the data passing through the data equivalent conversion module.
Preferably, the data separation module converts the colors of all models into gray scales after selecting the geometric data of the models, and the difference value of the gray scales of the two models which are attached to each other is not lower than 30.
Preferably, the equivalent model data selection module further includes a basic model setting module, the basic model setting module is responsible for setting a basic model, and when the equivalent model data selection module selects an equivalent model, the selected equivalent model at least includes one basic model.
Preferably, the equivalent model data selection module divides the models into the same models and the constructed models after selection, the equivalent model data selection module comprises initial selection and final selection during selection, the models repeatedly appear during the initial selection, the number of times of the repeated models is judged during the final selection, when the number of times of the repeated models exceeds five times, the models are the same models, and the other models are all constructed models.
Preferably, the data summarization module comprises a coordinate setting module and a model marking module, the model marking module is responsible for marking the selected same model, the coordinate setting module is responsible for setting a space coordinate system, and then deleting the geometrical data of the same model which appears repeatedly and recording the model mark and the space coordinate corresponding to the deleted geometrical data.
Preferably, the model data translation module further includes a reference point module, the reference point module is responsible for determining a reference point on the same model and then determining a relative position between the two same models through the reference point, and the model data rotation module further includes a reference axis module, the reference axis module is responsible for setting a determination reference axis on the same model and then determining a relative position between the two same models through the reference axis.
Preferably, the reference shaft comprises an initial rotating shaft and a complex rotating shaft, and when the same model only rotates for the first time, the initial rotating shafts of the two same models are parallel to each other.
Compared with the prior art, the invention has the beneficial effects that:
1) according to the invention, by selecting the same repeated models in the building information model, only one of all the same models is reserved, and the position information of the other same models is reserved, the high light weight of the building information model can be realized by greatly reducing the repeated same models;
2) a large amount of data used for improving the attractiveness in the building information model are removed through the data separation module, so that the building information model only retains basic geometric structure information, and the high light weight of the building information model can be realized.
Drawings
FIG. 1 is a schematic view of the working process of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example (b):
referring to fig. 1, the present invention provides a technical solution: a building information model lightweight and three-dimensional scene visualization system comprises a model conversion module, a data screening module, a data equivalent conversion module and a three-dimensional display module, wherein the model conversion module is responsible for converting a building information model into recognizable data, the building information model is a BIM model, the data screening module comprises a data separation module, an equivalent model data selection module, a model data translation module and a model data rotation module, the data separation module is responsible for selecting geometric data of the model and eliminating other data, the geometric data comprises the size and the position of the building information model, the rest data mainly improve the aesthetic measure of the building information model, the elimination of the aesthetic data does not influence the stability of the model, the data quantity of the building information model can be reduced, the equivalent model data selection module is responsible for selecting the same model and expressing the same model by one data, the data volume can be saved, before three-dimensional visual display, the building information model can be restored by copying, translating and rotating, the data volume of the building information model can be greatly reduced by removing repeated data of the same model, the model data translation module is responsible for determining the geometric position of the same model after moving, the model data rotation module is responsible for confirming the geometric position of the same model after rotating and using a coordinate to show the position of the same model, so that the removed repeated same model data can be conveniently restored, the data equivalent conversion module comprises a data induction module, a data compression module and a data restoration module, the data induction module is responsible for removing the repeated model in the same model and inducing and arranging the data of the rest models, the data compression module is responsible for compressing, storing and decompressing the data of the rest models, and the data restoration module is used for restoring the data of the rest models by copying, Translation and rotation recovery are carried out on the same model eliminated by the data induction module, and the three-dimensional display module is responsible for converting the data passing through the data equivalent conversion module into a building information model and carrying out three-dimensional visual display.
The data separation module converts the colors of all models into gray levels after selecting the geometric data of the models, the data volume of the building information models can be reduced by removing the colors of the building information models, the difference value of the gray levels of the two models which are mutually attached is not less than 30, and observers can conveniently distinguish the models in three-dimensional visual display through the difference value of the gray levels.
The equivalent model data selection module also comprises a basic model setting module, the basic model setting module is responsible for setting a basic model, the equivalent model data selection module at least comprises one basic model when selecting the same model, and after the same model is selected, the same model is arranged according to the size from large to small, so that the basic model can be arranged from outside to inside, the data summarization module can summarize and arrange the same model conveniently, meanwhile, the setting of the basic model can avoid that the data volume of the same model is too low, the data volume of the same model, such as coordinates, parallelism, rotation, and the like, exceeds the data volume of the same model, and the data of the building information model is easily redundant.
The equivalent model data selection module divides the model into an identical model and a constructed model after selection, the identical model refers to a model which appears repeatedly, the constructed model refers to a model which does not appear repeatedly, the model cannot be deleted due to non-repetition, and the number of repeated models in the building information model is more, so the light weight of the model can be realized by the method, the equivalent model data selection module comprises initial selection and final selection during selection, the model which appears repeatedly during initial selection, the number of repeated times of the repeated model during final selection is judged, when the number of repeated times of the initially selected model exceeds five times or the number of contained basic models is more than five times, the model is the identical model, the number of repeated times of the initially selected model is too small or the number of contained basic models is too small, the same model is listed as the calculated amount of data, and the method is not beneficial to quickly realizing the light weight of the building information model, the other models are all constructed models.
The data summarization module comprises a coordinate setting module and a model marking module, the model marking module is responsible for marking the selected same model, the selected same model can be conveniently searched through the marking, the coordinate setting module is responsible for setting a space coordinate system, the space coordinate system is determined through the space coordinate system, the position of the same model can be conveniently determined, then the geometric data of the same model which repeatedly appears is deleted, and meanwhile, the model marking and the space coordinate corresponding to the deleted geometric data are recorded, so that the accurate recovery in the later period is facilitated.
The model data translation module further comprises a reference point module, the reference point module is responsible for determining a reference point on the same model and then determining the relative position between the two same models through the reference point, the model data rotation module further comprises a reference axis module, the reference axis module is responsible for setting a reference axis on the same model and then determining the relative position between the two same models through the reference axis.
The reference shaft comprises an initial rotating shaft and a complex rotating shaft, and when the same model only rotates for the first time, the initial rotating shafts of the two same models are parallel to each other.
While there have been shown and described the fundamental principles and essential features of the invention and advantages thereof, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a building information model lightweight and three-dimensional scene visualization system, includes model conversion module, data screening module, data equivalent conversion module, three-dimensional display module, its characterized in that: the model conversion module is responsible for converting the building information model into recognizable data, the data screening module comprises a data separation module, an equivalent model data selection module, a model data translation module and a model data rotation module, the data separation module is responsible for selecting and eliminating other data of the model, the equivalent model data selection module is responsible for selecting the same model, the model data translation module is responsible for determining the geometric position of the moved same model, the model data rotation module is responsible for confirming the geometric position of the rotated same model, the data equivalent conversion module comprises a data induction module, a data compression module and a data restoration module, the data induction module is responsible for eliminating the repeated model in the same model and inducing the rest models, and the data compression module is responsible for compressing the data of the rest models, And the data restoration module restores the same model removed by the data induction module through copying, translation and rotation, and the three-dimensional display module is responsible for performing three-dimensional visual display on the data passing through the data equivalent conversion module.
2. The system of claim 1, wherein the building information model is lightweight and is visualized in a three-dimensional scene, and the system further comprises: and the data separation module converts the colors of all models into gray scales after selecting the geometric data of the models, and the difference value of the gray scales of the two models which are mutually attached is not lower than 30.
3. The system of claim 1, wherein the building information model is lightweight and is visualized in a three-dimensional scene, and the system further comprises: the equivalent model data selection module further comprises a basic model setting module, the basic model setting module is responsible for setting a basic model, and the equivalent model data selection module selects the same model and at least comprises one basic model.
4. The system of claim 1, wherein the building information model is lightweight and is visualized in a three-dimensional scene, and the system further comprises: the model is divided into the same model and a constructed model by the equivalent model data selection module after selection, the equivalent model data selection module comprises initial selection and final selection when selecting, the model repeatedly appears during the initial selection, the repeated times of the model repeatedly appears during the final selection are judged, when the repeated times of the initially selected model exceed five times, the model is the same model, and the rest models are all constructed models.
5. The system of claim 1, wherein the building information model is lightweight and is visualized in a three-dimensional scene, and the system further comprises: the data induction module comprises a coordinate setting module and a model marking module, the model marking module is responsible for marking the selected same model, the coordinate setting module is responsible for setting a space coordinate system, and then deleting the geometrical data of the same model which appears repeatedly and simultaneously recording the model mark and the space coordinate corresponding to the deleted geometrical data.
6. The system of claim 1, wherein the building information model is lightweight and is visualized in a three-dimensional scene, and the system further comprises: the model data translation module further comprises a reference point module, the reference point module is responsible for determining a reference point on the same model and then determining the relative position between the two same models through the reference point, the model data rotation module further comprises a reference axis module, the reference axis module is responsible for setting a reference axis determined on the same model and then determining the relative position between the two same models through the reference axis.
7. The system of claim 6, wherein the building information model is lightweight and is visualized in a three-dimensional scene, and the system further comprises: the reference shaft comprises an initial rotating shaft and a complex rotating shaft, and when the same model only rotates for the first time, the initial rotating shafts of the two same models are parallel to each other.
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